Heating pad



FIG. 1 is a top view of the heating pad of the present invention, showing my new design;

FIG. 2 is a bottom view of a heating pad of the present invention, showing my new design;

FIG. 3 is a close-up view of a section of the top surface of the heating pad of the present invention, showing my new design;

FIG. 4 is an isometric view of the heating pad of the present invention, showing my new design; and,

FIG. 5 is an isometric view of the heating pad of the present invention, showing my new design. 

CLAIM The ornamental design for a heating pad, as shown and described. 